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  <div id="layout-content"><div id="mysql-xdevapi-collection.find" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Collection::find</h1>
  <p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">Collection::find</span> &mdash; <span class="dc-title">Search for document</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysql-xdevapi-collection.find-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>mysql_xdevapi\Collection::find</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$search_condition</code><span class="initializer"> = ?</span></span>): <span class="type"><a href="class.mysql-xdevapi-collectionfind.html" class="type mysql_xdevapi\CollectionFind">mysql_xdevapi\CollectionFind</a></span></div>

  <p class="para rdfs-comment">
   Search a database collection for a document or set of documents. The
   found documents are returned as a CollectionFind object is to
   further modify or fetch results from.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysql-xdevapi-collection.find-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">search_condition</code></dt>

    <dd>

     <p class="para">
      Although optional, normally a condition is defined to limit the results
      to a subset of documents.
     </p>
     <p class="para">
      Multiple elements might build the condition and the syntax supports parameter binding. 
      The expression used as search condition must be a valid SQL expression.
      If no search condition is provided (field empty) then find(&#039;true&#039;) is assumed.
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysql-xdevapi-collection.find-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   A CollectionFind object to verify the operation,
   or fetch the found documents.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysql-xdevapi-collection.find-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1563">
   <p><strong>示例 #1 <span class="function"><strong>mysql_xdevapi\Collection::find()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$session&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysql_xdevapi</span><span style="color: #007700">\</span><span style="color: #0000BB">getSession</span><span style="color: #007700">(</span><span style="color: #DD0000">"mysqlx://user:password@localhost"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP&nbsp;DATABASE&nbsp;IF&nbsp;EXISTS&nbsp;addressbook"</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE&nbsp;DATABASE&nbsp;addressbook"</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$schema&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getSchema</span><span style="color: #007700">(</span><span style="color: #DD0000">"addressbook"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$collection&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$schema</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">createCollection</span><span style="color: #007700">(</span><span style="color: #DD0000">"people"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'{"name":&nbsp;"Alfred",&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"age":&nbsp;18,&nbsp;"job":&nbsp;"Butler"}'</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'{"name":&nbsp;"Bob",&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"age":&nbsp;19,&nbsp;"job":&nbsp;"Swimmer"}'</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'{"name":&nbsp;"Fred",&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"age":&nbsp;20,&nbsp;"job":&nbsp;"Construction"}'</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'{"name":&nbsp;"Wilma",&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"age":&nbsp;21,&nbsp;"job":&nbsp;"Teacher"}'</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'{"name":&nbsp;"Suki",&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"age":&nbsp;22,&nbsp;"job":&nbsp;"Teacher"}'</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$find&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$collection</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">find</span><span style="color: #007700">(</span><span style="color: #DD0000">'job&nbsp;LIKE&nbsp;:job&nbsp;AND&nbsp;age&nbsp;&gt;&nbsp;:age'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$find<br />&nbsp;&nbsp;</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">bind</span><span style="color: #007700">([</span><span style="color: #DD0000">'job'&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">'Teacher'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'age'&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #0000BB">20</span><span style="color: #007700">])<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">sort</span><span style="color: #007700">(</span><span style="color: #DD0000">'age&nbsp;DESC'</span><span style="color: #007700">)<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">limit</span><span style="color: #007700">(</span><span style="color: #0000BB">2</span><span style="color: #007700">)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetchAll</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
Array
(
    [0] =&gt; Array
        (
            [_id] =&gt; 00005b6b536100000000000000a8
            [age] =&gt; 22
            [job] =&gt; Teacher
            [name] =&gt; Suki
        )
    [1] =&gt; Array
        (
            [_id] =&gt; 00005b6b536100000000000000a7
            [age] =&gt; 21
            [job] =&gt; Teacher
            [name] =&gt; Wilma
        )
)
</pre></div>
   </div>
  </div>
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